Bath cup



FIG. 1 is a front view of a bath cup, a new design;

FIG. 2 is a rear view thereof;

FIG. 3 is a top view thereof;

FIG. 4 is a bottom view thereof;

FIG. 5 is a right view thereof; and,

FIG. 6 is a top pan view thereof. 

The ornamental design for a bath cup, as shown. 